Gas-burner.



PATENTED JAN. 29, 1907.

P. E. PETERSON.

GES BURNER. APPLICATION FILED 0GT.26, 1906.

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PATENTBD JAN. 29, 1907.

'1). E. PETERSON.

GAS BURNER. APPLIOATION FILED 0022.26. 1906.

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Inv/anion' @M o.. WASHINGTON. 11::4

PETER E. PETERSON, OF MILFORD, NEW HAMPSHIRE.

GAS-BURNER.

Specification of Letters Patent.

i Patented Jan. 2e, 1907.

Application filed October 26, 1906. aerial No. 340.635.

To all whom it may concern: y

Be it known that I, PETER E. PETERSON, a citizen of the United States, residing at' Milford, inthefcounty-of Hillsboro and State of New Hampshire, have invented new and useful Improvements in Gas-Burners, of which the following is a specification.

This invention relates to automaticallyclosing gas-burners, the object of the same being to provide a gas-burnerwhich will shut oflI the gas if the same becomes accidentally'eXtinguished,.either by the lowering of pressure in the gas-main or by the gas being blown out at theburner-tip, either by a draftv or by an. ignorant person.

The invention consists in the combination and arrangement of parts set forthin the following specification and particularly pointed out in the claims thereof.

Referring to the drawings, Figure 1 is a rear elevation of my improved gas-burner with the gas-supply pipe shown in section; Fig. 2 is a-sectional elevation taken on line 2 2 of Fig. 1. Fig. 3 is an. underneath plan, partly in section, on line 3 3 of Fig. 2. Fig. 4 is a sectional planytaken on line 4 4 of Fig. 2. Fig. 5 is an underneathplan, partly in section, taken on line 5 5 of Fig. 2, Fig. 6 is a sectional elevation taken on line 6 6 of Fig. 5 lookingin the direction of the arrows on said line.y line 7 7 of Fig. 2 looking toward the left in said ligure.

Like -numerals refer tolike parts throughout the several views of the drawings.

In'the drawings, 10 isa casing formed, preferably, intwo parts 11 and 12, which are joined together by a collar 13, having screwthreaded engagement with said parts. lower part 12 is'connected to a gas-supply pipe 14. A passage-way 15 leads from the gas-supply pipe 14 to a chamber 16, located between the upper and lower parts 11 and 12, respectively, of the casing 10. The lpassageway '15 is continued in the upper ypart 11,

terminating at its upper end in a burner-tipy 17, which has screw-threaded engagement with said upper part 11. A stop-cock 18 is rotatably mounted in the lower ypart 12 and has a port 19 extending transversely thereacross in alinement with the lpassage-way 15.

A cut-off plate 20r is rotatably mounted upon the casing 10between the parts 11 and 12, as seen in Figs. 2, 5, and 6, said cut-off plate being provided witha series of ports 21.

21 concentric therewith and adapted to be Fig. 7 is anenlarged section taken on.

The

brought alternatelyinto and out ofalinement with `the passage-way15v by mechanism hereinafter described. Around the periphery of the cut-off plate 20 are provided teeth 22, which are engaged for the-purpose* of rotating said cut-off plate by a two-armed*i Said driver 23 is `fast to a shaft driver 23.

24, journaled-to rotate in the part 12 and having fastened thereto at its lower end a bevel-2 gear 25, which meshes into a ybevel-gear 26,`

fast to a shaft 27, journaled to rotatein the' lower part 12.

will be understood'that the toothed clutch28 is fast to the shaft 27 and that the ratchet 30 and bevel-gear 31 are mounted to rotate loosely.upon said shaft 27.

A coil of iiat metal 36 of two or more'convolutions surrounds the tip 17, the inner endv being fastened to said tip, the outer end to a The shaft 27 has a toothedA clutch 23 fast thereto and adapted to engagek1 a spring-pawl 29, fast to a .stop-ratchet-"SO- The stop-ratchet 30 is fastened rigidly tol a'v bevel-ge ar 3 1, which meshes into a bevel-gear A spring 35 is also fastened 'l crank-arm 37, formed upon a vertically-eX- tending shaft 38, journaled to rotate in the upper part 11 and having fastened toits lower end an arm 39, which constitutes,-in effect, a pawl, being formed of thin metal and engaging at its outer end ratchet-teeth 40,

formed uponan annular rib 41 integraliwith and extending downwardly from the cut-off plate 20; The metal coil 36 is preferably formed of two layers or thicknesses of different kinds of metal, one of said metals being l more easily expanded thanthe other,'so that i when the gas islighted at the burner-tipltheheat therefrom will cause the metal ooil36tosy expand, and when the gas is turned ioutforI blown out, as the case maybe, the heat being removed, the metal forming thecoil 36fwill contract, thus moving the outer end offthe coil outwardly when it is expanded andl inv-- wardly when it contracts and rotatingthe IOO shaft 38, as well as the arm 39 attachedthereto, for the purpose hereinafter described.

The general operation of the device herein-1 before specifically described is 4as follows?- Before the gas is turned on the cut-off plate' 2() and its driver 23 are in the position illus-- trated in dotted lines, Fig. 5, and the ports 21' 15l by the quarter-rotation of the stop-cock 18, hereinbefore referred to, and of the gears 32 31,.shaft 27, gears -26 25, and shaft 24, which'by a quarter-rotation of said stop-cock causes the driver 23 to rotate a quarter-turn from the position illustrated in dotted lines, Fig. to that illustrated in full lines therein, thus moving the cut-off plate 2() in the direction of the arrow a. from the position illus- .,trated in Fig. 5 until the port 21 is in alinement with the passage 15. The gas now passes through the port 21 and into the passage-way and thence upwardly through the burner-tip 17, where it is lighted. As

soon as the gas is lighted the heat therefrom causes the metal coil 36 to expand, the outer end thereof being drawn outwardly by such expansion and rocking the crank-arm 37, giving a partial rotation to the shaft 38 and to the arm 39, fast thereto. Said arm slips over several of the ratchet-teeth 40, and as soon as the gas is turned or blown out the coil of metal contracting causes the outer end thereof to approach the center of said coil, thus rocking the crank-arm 37 and shaft 38 in the opposite direction to that hereinbefore referred to or in the direction of the arrow a, Fig. 5, and rotating the cut-off plate 20 until the port 21 is moved out of alinement with the passage-way 15 and the ports assume the same relative position to said passageway as is shown in Fig. 5.

It will be understood that when the stopcock is turned a quarter-turn the driver-plate 23 is also turned a quarter-turn. Assuming the said driver-plate to be in the position illustrated in Fig. 5 in dotted lines, a quarterturn brings the same substantially to the position shown in full lines and lets the gas on, turning the port 19 in the stop-cock into alinement with the passage-way 15., Now another quarter-turn shuts the gas off and rotates the driver-arm to the position illustrated in dotted lines, Fig. 5. When the driver-arm is turned, as hereinbefore described, by the stop-cock from the position illustrated in dotted lines, Fig. 5, to that illustrated in full lines therein, the port 21 is brought into alinement with the passage-way 15, so that during the first quarter-turn of the stop-cock the passage-way is open from the pipe 14 through the passage-way 15, port 19, chamber 16, port 21', passage-way 15', to the burner-tip 17. Assuming now that the gas is blown out, the coil of metal 36 will contract, rocking the arm 37 and shaft 38, as well as the arm 39, and moving the cut-off plate 20 until the port 21 is out of alinement with the passage-way 15, so that the gas is then shut off. Assuming the gas to be turned y out in the usual manner, a quarter-turn of the stop-cock will rotate the driver 23 from the position illustrated in full lines to that shown in dotted lines, Fig. 5, and will shut off the gas, and a subsequent cooling of the coil 36 will move the port 21 out of alinement with the passage-way 15.

In order to indicate whether the gas is turned on or off, an index-plate 42 is fastened to the stop-cock 18, said index-plate having a pointer 13 thereon which points to the words Off or On,I Fig. 3, when the port 19 stands across or in alinement with, respectively, the passage-way 15.

Having thus described my invention, what I claim, and desire by Letters Patent to secure, is-

1. In a gas-burner, a casing, a burner-tip fast thereto, a stop-cock, said casing provided with a passage leading from said stopcock to said burner-tip, a rotary cut-off plate extending across said passage, with a series of concentric ports therein adapted to aline with said passage, teeth on said cut-off plate, a rotary driver-plate adapted to engage said teeth and rotate said cut-off plate, and gear.-

ing operatively connecting said driver-plate to said stop-cock.

2. In a gas-burner, a casing, a burner-tip fast thereto, a stop-cock, said casing provided with a passage leading from said stopcock to said burner-tip, a rotary cut-off plate extending across said passage, with a series of concentric ports therein adapted to aline with said passage, a metal coil surrounding said tip, one end fast to a stationary part, a vertically-extending rod journaled to rotate in said casing, a crank-arm on said rod attached to the outer end of said coil, an arm fast to the lower end of Said rod, and ratchetteeth on said rotary cut-off plate in engagement with said last-named arm, whereby when said metal coil contracts said cut-off plate is rotated to move one of said ports lout of alinement with said passage-way.

3. In a gas-burner, a casing, a burner-tip fast thereto, astop-cock, said casing provided with a chamber and with a passage leading from said stop-cock tov said chamber and from said chamber to said tip, a rotary cut-off plate located in said chamber and provided with ports adapted to aline with said passage, and mechanism operatively connecting said cut-off plate to said stop-cock, whereby when said stop-cock is rotated said cut-off late is intermittently rotated to move said ports into alinement with said passage.

In a gas-burner, a casing, a burner-tip fast thereto, a stop-cock, said casing provided with a chamber and with a passage leading from said stop-cock to said chamber and from said chamber to said tip, a rotary cut-0H plate located in said chamber and pro- IOO IIO

vided with ports adapted to aline With said passage, mechanism operatively connecting said out-OIT plate to saidstop-eoek, whereby When said stopeoek is rotated said outoliT plate is intermittently rotated to move said ports into alinement With said passage7 a metal Coil adapted to be expanded and oontraeted by variations in temperature, and instrumentalities operated by said coil to rotate said cutoff plate and move one of said ports out of alinement With said passage.

5. In a gas-burner7 a easing, a burner-tip fast thereto, a stop-oook, a passage leading from said stop-cook to said burner-tip, a rotary cut-off plate With ports therein adapted to aline with said passage7 mechanism cony neeting said stop-cock to said cut-off plate adapted to rotate said cut-off late and move said ports into alinement Wit said passage,

and mechanism operable by differences 1n 2o temperature in one of its parts to rotate said eut-off plate and move one of said ports out of alinement With said passage.

In testimony whereof I have hereunto set my hand in presence of tWo subscribing Wit- 2 5 

